Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 385 · 40 questions

What you do (Yellow or red?): 1. Mix turmeric powder with a little water into a paste and paint it on white paper strips; let them dry. 2. Put a drop of soap solution on one strip and a drop of lemon juice on another. 3. Write down the colour each drop makes. 4. Add lemon juice to the reddish spot and watch it change back.

1. 1.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns blue (c) it turns green (d) reddish-brown
2. 2.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) baking soda water (c) lemon juice (d) plain water
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
4. 4.🧺 Which of these is needed for the turmeric test? (a) a dropper or spoon (b) a battery cell (c) a comb (d) a balloon
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) water (c) a balloon (d) soap solution
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we keep it the same (c) we change it
8. 8.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
9. 9.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) turmeric powder (c) yeast (d) a dropper or spoon
10. 10.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your school uniform (d) your best clothes
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) False (b) True
12. 12.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
13. 13.True or false: plain water turns turmeric reddish-brown. (a) False (b) True
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the number of drops (c) the colour we see (d) the light we look in
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the light we look in (c) the colour we see
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the turmeric paper
17. 17.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the light we look in (c) the liquid we test (d) the colour we see
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we measure it (c) we keep it the same
20. 20.True or false: water is not needed for the turmeric test. (a) False (b) True
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we change it (c) we measure it
22. 22.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sip each liquid (c) sniff each bottle hard (d) mix bathroom cleaners
23. 23.🫧 Which of these is a base? (a) curd (b) sugar water (c) detergent water (d) salt water
24. 24.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it disappears (c) it turns blue (d) it turns yellow again
25. 25.True or false: plain water keeps turmeric yellow. (a) False (b) True
26. 26.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
27. 27.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
28. 28.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) soap solution (c) sugar water (d) lemon juice
29. 29.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) reddish-brown (c) green (d) bright blue
30. 30.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
31. 31.True or false: a battery cell is not needed for the turmeric test. (a) True (b) False
32. 32.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
33. 33.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
34. 34.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is hot (c) soap is magnetic (d) soap water is a base
35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a magnet (c) white paper strips (d) water
36. 36.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
37. 37.True or false: vinegar is an acid. (a) False (b) True
38. 38.🔍 Which is the odd one out? (a) plain water (b) sugar water (c) soap solution (d) salt water
39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a mirror (c) turmeric powder (d) lemon juice
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the colour we see (c) the liquid we test

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